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FT-NIR spectrometer | SIMTRUM Photonics Store

Products / Light Analysis /Spectrometers /FT Infrared Spectrometer(900-16000nm) /FT-NIR spectrometer(900-2500nm) /
FT-NIR spectrometer(900-2500nm)
Overview Specifications Software Q&A Related Products Order Now！

SIMTRUM'S FT-NIR spectrometer is a high-performance system combining high resolution, broad wavelength range and excellent sensitivity. The FT-NIR functioning principle permits to measure over a much broader range than grating spectrometers that are limited to 2100nm.

Thanks to its permanently aligned interferometer and solid-state reference laser, the FT-NIR Rocket offers excellent stability in both intensity and wavelength scales. The FT-NIR Rocket is compatible with light sources and sampling accessories (like fibers, cuvette folder, ...) typically used with array-detector based NIR spectrometers.

Its outstanding stability in both wavelength and intensity scales makes it an ideal tool for highly reproducible chemometric analysis.In comparison to array-photodiode NIR spectrometers, the single photodiode operation of the FT-NIR ensures no defect pixels, no gain variation among pixels and no dark-current drifts. Also, the device does not suffer from stray-light as grating spectrometers.

With four available spectral ranges and adjustable spectral resolution down to 2cm^-1, the FT-NIR spectrometer is a highly flexible instrument that can be tailored to your application. Designed for convenience and ease-of-use, our FT-NIR spectrometer is readily operational with our software using a standard USB 2.0 connection.

Features

  • Wide wavelength range(0.9-2.5um)
  • High resolution
  • Excellent stability in intensity & wavelength scale
  • High sensitivity
  • Compact and rugger
  • Long lifetime
  • Low power consumption

Application

  • Transmission, diffuse reflectance measurement
  • Light source measurement
  • Material identification and quantification

 

 

 
 

Principle

Permanentely aligned interferometer

The heart of the FT-Rocket is dual corner-cube (retro-reflector) interferometer. The two corner-cubes are fixed to a common swinging arm, which rotates to create an optical path difference (with respect to the beam splitter) in the two arms of the interferometer.This type of design is called a permanently aligned interferometer. This particular arrangement of the interfeormeter is known to be the most robust against vibrations and temperature drifts. It never has to be realigned. The swinging arm of the interferometer rotates on wear-free flexure system, making this mechanical system extremely robust and durable.

 

Solid-state reference laser

For measuring the movement of the mirrors, a solid-state reference laser is coupled into the interferometer. Compared to classic HeNe lasers, the solid-state lasers that we use are more compact and have a much longer life-time. They have a very low temperature-induced wavelegnth drift and, when kept at constant temperature with a Peltier element, their wavelength can be stabilized to a few PPM, thus providing a very accurate and reproducible wavelength scale. This is crucial for ensuring a day-to-day and unit-to-unit consistency.


General Parameters
Model LA-AR01-FTNIR-025
  Spectral Range [cm-1] 11000-4000
  Spectral Range [μm] 0.9-2.5
  Detector Type Extended type InGaAs 2-stage TE-cooled
  Detector Peak D*[cm Hz1/2 W-1 ] ＞2×10^11
  Signal-to-noise ratio ＞100000:1
  Recommended fiber Low-OH silica Multi-mode fiber with 200µm or 600µm core
  Internal reference laser Temperature controlled solid-state @795nm
  Resolution(unapodized) [cm-1] 2, 4, 8 (user selectable)
  Wavenumber repeatability ＜20 PPM
  Scan frequency ＞4 Hz @ 4cm-1
  Power requirement 12V / 10W max

 

 

Other Parameters

  Fibered interface Fiber core up to ∅ 0.6mm, NA=0.25, SMA 905 connector
  Interferometer type Permanently aligned with dual retro-reflector
  A/D Converter 24 bit
  Amplifier 4 gain levels low noise trans-impedance amplifier
  Operating temperature / humidity 5℃-40℃ / non condensing
  Communication Interface USB 2.0
  Software Interface Windows 7/10/11 API for controlling the instrument via our DLL
  Dimensions 180mm×160mm×80mm
  Weight 1800g

 


We fully appreciate and value the multiple benefits that a dedicated, performant and reliable software can bring to your application. Automatic data collection, parameters changes, status diagnosis and many other essential tasks should be implemented as simply and as efficiently as possible in order to get the most out of your spectrometer. This philosophy led to the development of a multi-threading, cross-platform and versatile software application, the digital acquisition system or AoDAQ.

The AoDAQ simultaneously takes care of:

1. Handling communication with the FT-IR via USB

2. Processing raw signals to deliver a spectrum

3. Running a TCP Ethernet server

The AoDAQ can be installed on all sorts of computers, from desktop machines to embedded, low-power single board computers. Thanks to the hosting of a TCP server, the instrument data and parameters can be accessed locally and/or remotely. All communication with the instrument eventually reduces to a set of TCP/IP commands that allow to quickly acquire data, adjust parameters, monitor the instrument status etc. using the programming environment of your choice. 

 


What is the resolution of the FT-NIR Rocket in nm (wavelengths)?

The resolution of Fourier-transform spectrometers is usually expressed in wave-numbers (ν), which are simply the inverse of wavelength (ν=1/λ). The conversion betwen wave-number resolution and wavelength resolution is Δλ = λ2 · Δν. The the graph below shows this conversion for the situations where Δν = 2cm-1, 4cm-1 or 8cm-1.


 

 

Can I use the FT-NIR Rocket with standard fiber-optics accessories?

Yes. Although the FT-NIR is not a dispersive but a Fourier-transform spectrometer, accessories normally used with dispersive spectrometer are compatible. The spectrometer has a SMA-905 input fiber connector. One just has to take care that accessories are NIR compatible. For example, optical fibers must be rated "low-OH content" to avoid too high absorption in the NIR.

 

 

What is the temperature-stabilized internal reference laser?

The precision of the wavelength scale in Fourier-transform spectrometers relies on its internal reference laser. In our compact FT spectrometers, the reference laser is a solid-state type whose central wavelength has a naturally low temperature-induced drift, ~70 ppm/ºC. In some applications, this is sufficient. But in other applications, a more reproducible wavelength scale must be achieved by the spectrometer. With the temperature-stabilization of the laser (via a thermoelectric element) a wavelength reproducibility < 10 ppm can be guaranteed all over the instrument operational temperature range (5-40 ºC). To give an example, at 1000nm wavelength, a shift of 10 ppm means 10E-6 * 1000nm = 0.01nm. This is especially important for applications such as laser characterization or chemometric analysis.


Related products

Model Wavelength Range Resolution Detector  
  FT-NIR spectrometer 900-2500 nm 2/4/8 cm-1(user selectable) Extended type InGaAs PIN photodiode, 2TE cooled
  FT-MIR spectrometer 200-16000 nm 0.5/2/4/8cm-1(user selectable) MCT (4-TE cooled)
MCT (LN2 cooled)
DLATGS
  Fiber coupled FT-IR spectrometer 200-16000 nm 2/4/ 8cm-1 (user selectable) InGaAs (2-TE cooled)
MCT (4-TE cooled)
MCT (LN2 cooled)
  VIS-NIR-FIB spectrometer 350-2500 nm <1.5 nm silicon array detector (3648 pixels) 16-bit ADC.extended range InGaAs photodiode, 2TE cooled, 24-bit ADC.
  VIS-NIR-DR spectrometer 360-2500 nm 5 nm Extended range InGaAs detector

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Compare Model Drawings & Specs Availability Reference Price
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LA-AR01-FTNIR-025-2TE
Spectral Range：0.9-2.5μm,Detector Peak D*：＞2×10^11cm Hz^1/2 W^-1,Signal-to-noise ratio：＞100000:1,Resolution：2/4/8 cm-1(user selectable) 		4-6week $27011.76

LA-AR01-FTNIR-025-2TE - Parameter

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